Actinium is a metal.
No, actinium is not a metalloid. It is a radioactive metal element that belongs to the actinide series on the periodic table.
None of the above. Thiamin is a compound and the terms metal, nonmetal and metalloid apply to elements.
Silicon is considered a metalloid. It exhibits properties of both metals and nonmetals.
Lutetium is a metal. It is a rare earth metal that is part of the lanthanide series on the periodic table.
Plastic is a type of material known as a polymer, which is a nonmetal in terms of its composition. It is not classified as a metal or a metalloid (semimetal).
Actinium is a metal.
No, actinium is not a metalloid. It is a radioactive metal element that belongs to the actinide series on the periodic table.
Uranium is a metal, rather than a nonmetal, or metalloid.
Nails are metal.
nonmetal
metalloid
metalloid
metalloid
metalloid
Silicon is a metalloid.
Carbon is a nonmetal.
metal